Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2003-04-26
Phys.Rev.D68:034505,2003
Physics
High Energy Physics
High Energy Physics - Lattice
16 pages, 8 figures, LaTeX, minor elaboration of formalism and singular value decomposition for non-specialists and addition o
Scientific paper
10.1103/PhysRevD.68.034505
Calculation of moments of generalized parton distributions in lattice QCD requires more powerful techniques than those previously used to calculate moments of structure functions. Hence, we present a novel approach that exploits the full information content from a given lattice configuration by measuring an overdetermined set of lattice observables to provide maximal statistical constraints on the generalized form factors at a given virtuality, t. In an exploratory investigation using unquenched QCD configurations at intermediate sea quark masses, we demonstrate that our new technique is superior to conventional methods and leads to reliable numerical signals for the n=2 flavor singlet generalized form factors up to 3 GeV^2. The contribution from connected diagrams in the flavor singlet sector to the total quark angular momentum is measured to an accuracy of the order of one percent.
Hagler Philipp
Lippert Thomas
Negele John
Renner Dru
Schilling Klaus
No associations
LandOfFree
Moments of Nucleon Generalized Parton Distributions in Lattice QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Moments of Nucleon Generalized Parton Distributions in Lattice QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moments of Nucleon Generalized Parton Distributions in Lattice QCD will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-266440